linux/arch/sparc/prom/ranges.c
Sam Ravnborg 5f66dd35b4 sparc: fix sparse warnings in arch/sparc/prom for 32 bit build
Fix following sparse warnings:
arch/sparc/prom/bootstr_32.c:32:35: warning: Using plain integer as NULL pointer
arch/sparc/prom/memory.c:61:13: warning: symbol 'prom_meminit' was not declared. Should it be static?
arch/sparc/prom/misc_32.c:74:1: error: symbol 'prom_halt' redeclared with different type (originally declared at arch/sparc/include/asm/oplib_32.h:67) - different modifiers
arch/sparc/prom/ranges.c:16:26: warning: symbol 'promlib_obio_ranges' was not declared. Should it be static?
arch/sparc/prom/ranges.c:17:5: warning: symbol 'num_obio_ranges' was not declared. Should it be static?
arch/sparc/prom/ranges.c:39:1: warning: symbol 'prom_adjust_ranges' was not declared. Should it be static?
arch/sparc/prom/ranges.c:69:13: warning: symbol 'prom_ranges_init' was not declared. Should it be static?
arch/sparc/prom/tree_32.c:286:22: warning: Using plain integer as NULL pointer
arch/sparc/prom/tree_32.c:286:38: warning: Using plain integer as NULL pointer

None of the warnings indicated any serious issues.

We are now sparse clean for 32 bit build in arch/sparc/prom.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-03 12:15:12 -08:00

119 lines
3.6 KiB
C

/*
* ranges.c: Handle ranges in newer proms for obio/sbus.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
*/
#include <linux/init.h>
#include <linux/module.h>
#include <asm/openprom.h>
#include <asm/oplib.h>
#include <asm/types.h>
#include <asm/system.h>
static struct linux_prom_ranges promlib_obio_ranges[PROMREG_MAX];
static int num_obio_ranges;
/* Adjust register values based upon the ranges parameters. */
static void
prom_adjust_regs(struct linux_prom_registers *regp, int nregs,
struct linux_prom_ranges *rangep, int nranges)
{
int regc, rngc;
for (regc = 0; regc < nregs; regc++) {
for (rngc = 0; rngc < nranges; rngc++)
if (regp[regc].which_io == rangep[rngc].ot_child_space)
break; /* Fount it */
if (rngc == nranges) /* oops */
prom_printf("adjust_regs: Could not find range with matching bus type...\n");
regp[regc].which_io = rangep[rngc].ot_parent_space;
regp[regc].phys_addr -= rangep[rngc].ot_child_base;
regp[regc].phys_addr += rangep[rngc].ot_parent_base;
}
}
static void
prom_adjust_ranges(struct linux_prom_ranges *ranges1, int nranges1,
struct linux_prom_ranges *ranges2, int nranges2)
{
int rng1c, rng2c;
for(rng1c=0; rng1c < nranges1; rng1c++) {
for(rng2c=0; rng2c < nranges2; rng2c++)
if(ranges1[rng1c].ot_parent_space == ranges2[rng2c].ot_child_space &&
ranges1[rng1c].ot_parent_base >= ranges2[rng2c].ot_child_base &&
ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size - ranges1[rng1c].ot_parent_base > 0U)
break;
if(rng2c == nranges2) /* oops */
prom_printf("adjust_ranges: Could not find matching bus type...\n");
else if (ranges1[rng1c].ot_parent_base + ranges1[rng1c].or_size > ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size)
ranges1[rng1c].or_size =
ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size - ranges1[rng1c].ot_parent_base;
ranges1[rng1c].ot_parent_space = ranges2[rng2c].ot_parent_space;
ranges1[rng1c].ot_parent_base += ranges2[rng2c].ot_parent_base;
}
}
/* Apply probed obio ranges to registers passed, if no ranges return. */
void
prom_apply_obio_ranges(struct linux_prom_registers *regs, int nregs)
{
if(num_obio_ranges)
prom_adjust_regs(regs, nregs, promlib_obio_ranges, num_obio_ranges);
}
EXPORT_SYMBOL(prom_apply_obio_ranges);
void __init prom_ranges_init(void)
{
phandle node, obio_node;
int success;
num_obio_ranges = 0;
/* Check for obio and sbus ranges. */
node = prom_getchild(prom_root_node);
obio_node = prom_searchsiblings(node, "obio");
if(obio_node) {
success = prom_getproperty(obio_node, "ranges",
(char *) promlib_obio_ranges,
sizeof(promlib_obio_ranges));
if(success != -1)
num_obio_ranges = (success/sizeof(struct linux_prom_ranges));
}
if(num_obio_ranges)
prom_printf("PROMLIB: obio_ranges %d\n", num_obio_ranges);
}
void prom_apply_generic_ranges(phandle node, phandle parent,
struct linux_prom_registers *regs, int nregs)
{
int success;
int num_ranges;
struct linux_prom_ranges ranges[PROMREG_MAX];
success = prom_getproperty(node, "ranges",
(char *) ranges,
sizeof (ranges));
if (success != -1) {
num_ranges = (success/sizeof(struct linux_prom_ranges));
if (parent) {
struct linux_prom_ranges parent_ranges[PROMREG_MAX];
int num_parent_ranges;
success = prom_getproperty(parent, "ranges",
(char *) parent_ranges,
sizeof (parent_ranges));
if (success != -1) {
num_parent_ranges = (success/sizeof(struct linux_prom_ranges));
prom_adjust_ranges (ranges, num_ranges, parent_ranges, num_parent_ranges);
}
}
prom_adjust_regs(regs, nregs, ranges, num_ranges);
}
}